1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KonstantinChe [14]
3 years ago
14

after a certain pesticide compound is applied to crops its decomposition is a first order reaction with a half life of 56 days.

what is the rate constan for the decomposition reacion
Chemistry
1 answer:
antoniya [11.8K]3 years ago
4 0

Answer:

Rate constant = 0.01238 days⁻¹

Explanation:

The first order reaction has as general equation:

Ln[A] = -kt + Ln[A]₀

<em>Where [A] is concentration of the reactant after time t,</em>

<em>k is rate constant</em>

<em>And [A]₀ the initial concentration of the reactant</em>

<em />

The half-life is the time required to reach the half of the initial concentration. If [A]₀ = 1; [A] = 1/2

Replacing:

Ln[1/2] = -kt + Ln[1]

-0.693 = -k*56days

0.01238days⁻¹ = k

<h3>Rate constant = 0.01238 days⁻¹</h3>

<em />

You might be interested in
Which of the following is the BEST description of a budget? *<br> 10
Nonamiya [84]

Answer:

A budget is an estimation of revenue and expenses over a specified future period of time and is usually compiled and re-evaluated on a periodic basis. Budgets can be made for a person, a group of people, a business, a government, or just about anything else that makes and spends money.

4 0
3 years ago
Please help me with this chemistry
kobusy [5.1K]

Answer:

57)a)increase

b)increase

c)pressure

58)

7 0
1 year ago
Bis(bipyridyl)cadmium(II) chloride write the chemical formula
GREYUIT [131]
Following are the chemical and structural formulae of said complex compound, 

3 0
3 years ago
Read 2 more answers
How do waves interact with matter ?
velikii [3]
Waves interact with matter in several ways. The interactions occur when waves pass from one medium to another. Besides bouncing back like an echo, waves may bend or spread out when they strike a new medium. These three ways that waves may interact with matter are called reflection, refraction, and diffraction.
6 0
2 years ago
Match each type of reaction to its amount of potential energy. (PLEASE HELP )
sergejj [24]
Endo is more in reactants and exo is more in products because in exothermic reactions heat is released
8 0
2 years ago
Other questions:
  • When magnesium metal is heated in air it begins to release large amounts of heat and light. What kind of a reaction is this an e
    12·2 answers
  • How many moles of no2 are equivalent to 74.3g of no2
    14·2 answers
  • What is the number of electrons in silicon-30
    9·2 answers
  • A neutral atom of sulfur becomes an ion with a negative two charge by?
    14·1 answer
  • Which half-reaction correctly shows the oxidation of iron
    6·1 answer
  • The chemical formula for water is h2o. According to this formula what is the composition of a water molecule
    14·1 answer
  • Un paquete de 4.5 kg sube desde el suelo hasta una estantería de 2.8 m de altura. Encuentra el aumento de energía potencial
    6·1 answer
  • For the reaction, Cl2 + 2KBr --&gt; 2KCl + Br2, how many moles of potassium chloride, KCl, are produced from 102g of potassium b
    14·1 answer
  • If a compound pulley has four
    6·1 answer
  • If an element has a mass number of 52 and an atomic number of 24, how many neutrons does the element have
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!